{"product_id":"flowmaster-american-thunder-2-5-inch-stainless-header-back-exhaust-kit-817409","title":"Flowmaster American Thunder 2.5-Inch Stainless Header-Back Exhaust Kit 817409","description":"\u003cp\u003e\u003cspan class=\"description\"\u003eExhaust System Kit; American Thunder ® Header Back System; Stainless Steel; With Mufflers; 2-1\/2 Inch Pipe Diameter; Dual Exhaust With Dual Exit; Rear Exit; Without Tip\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"detail-p65-warning\"\u003e\n\u003cspan class=\"restriction-icon restriction-p65\"\u003e\u003cimg src=\"https:\/\/wwwsc.ekeystone.com\/-\/media\/Project\/KAO\/eKeystone\/Prop65\/prop65.gif\" title=\"Prop 65 WARNING: This product can expose you to chemicals known to the State of California to cause cancer and\/or birth defects or other reproductive harm.  For more information go to www.P65Warnings.ca.gov.\" alt=\"Restriction Icon\"\u003e\u003c\/span\u003eProp 65 WARNING: This product can expose you to chemicals known to the State of California to cause cancer and\/or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.\u003c\/div\u003e\n\u003cdiv class=\"detail-p65-warning\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"detail-p65-warning\"\u003e\n\u003cdiv class=\"component kaoxa-product-detail-description col-12 indent-bottom\"\u003e\n\u003cdiv class=\"component-content\"\u003e\n\u003cdiv class=\"tabbable populated\"\u003e\n\u003cdiv class=\"product-detail-description\"\u003eFor the person who is looking for a complete Header-back dual exhaust system with an aggressive tone. These systems are mandrel bent for maximum performance. American Thunder systems deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. Like all Flowmaster systems, the benefits include improved throttle response, power and Mileage. Designed for an easy fit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"component kaoxa-product-detail-features col-12\"\u003e\n\u003cdiv class=\"component-content\"\u003e\n\u003cdiv class=\"tabbable populated\"\u003e\n\u003cdiv class=\"product-detail-features\"\u003e\n\u003ch1\u003eFeatures \u0026amp; Benefits\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli class=\"feature\"\u003eMandrel Bent 16 Gauge 409 Stainless Steel Tubing\u003c\/li\u003e\n\u003cli class=\"feature\"\u003eAggressive And Powerful Exterior Exhaust Tone\u003c\/li\u003e\n\u003cli class=\"feature\"\u003eHeader Back System\u003c\/li\u003e\n\u003cli class=\"feature\"\u003eImproved Throttle Response, Power And Mileage\u003c\/li\u003e\n\u003cli class=\"feature\"\u003eDyno Tuned For Maximum Performance\u003c\/li\u003e\n\u003cli class=\"feature\"\u003eLimited Lifetime Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1\u003eAttributes\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eType: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eHeader-Back\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eExhaust Type: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eDual\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eOutlet Type: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eDual\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eExit Position: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eDriver And Passenger Rear\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eMaterial: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eStainless Steel\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eIncludes Muffler: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eYes\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eSound Level: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eAggressive\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eDiameter (IN): \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003e2-1\/2 Inch\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eIncludes Exhaust Tip: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eNo\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eExhaust Tip Style: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eWithout Tip\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eExhaust Tip Material: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eWithout Tip\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eMuffler Quantity: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003e2\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eIncludes Exhaust Pipe Muffler Delete: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eYes\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eMuffler Configuration: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eSingle Inlet\/ Single Outlet\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eMuffler Brand: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eSuper 40 Series\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eIncludes Hardware: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eYes\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eRequired Welding: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eYes\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eEstimated Install Time (Hours): \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003e2\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"col-3\"\u003eFLOWMASTER\u003c\/div\u003e\n\u003cdiv class=\"col-1\"\u003eF13\u003c\/div\u003e\n\u003cdiv class=\"col-lg\"\u003ePerformance Mufflers and Exhaust Systems\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cspan\u003eWarranty Return Policy:\u003c\/span\u003e Return for supplier inspection - Immediate credit issued upon return to KAO\/NTP.\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch1\u003eInstallation Instructions\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/ekeystone.vehiclepartimages.com\/PMDT\/FLO\/InstallationInstructions\/817409_instructions.pdf\" target=\"_blank\"\u003e817409_instructions.pdf\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1\u003eWarranties\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/ekeystone.vehiclepartimages.com\/PMDT\/FLO\/Warranty\/fm_warranty_general.pdf\" target=\"_blank\"\u003efm_warranty_general.pdf\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Flowmaster","offers":[{"title":"Default Title","offer_id":51043282583609,"sku":"817409","price":1453.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0754\/2938\/0153\/files\/ImageServerAPI-2026-11-02T103335.512.jpg?v=1793633632","url":"https:\/\/summitforgesupply.com\/products\/flowmaster-american-thunder-2-5-inch-stainless-header-back-exhaust-kit-817409","provider":"Summit Forge Supply","version":"1.0","type":"link"}